Riveting-machine.



E. M. COBB.

RIVETING MACHINE.

APPLICATION FILED OCT. 9,1913- 1,189,917'. Patented July 4,1916.

2 SHEETS-SHEET l.

:I l Inventor', `2 www CGM" @MW @1/wm E r E. M. COBB.

RIVETING MACHINE.

APPLICATION FILED ocT. 9. 1913.

1,189,917. PIIIenIedJ'uIy 4,1916.

2 SHEETS-SHEET' 2.

Q. III III ELMER M. COBB, F SOUTH PORTLAND, MAINE.

RIVETING-MACHINE.

Specification of Letters Patent.

Patented July 4, 1916.

Application filed October 9,1913. Serial No. 794,253. Y

To all whom t may concern:

Be it known that I, ELMER M. COBB, of South Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Riveting-Machines, of which the following is a specification.

My invention relates to a self feeding riveting machine designed for riveting together sheets of paper or other thin material.

The 'principal object of the invention is to produce a self feeding riveting machine specially adapted to be used in offices, book binderies, etc., in connection with the rivet covered by my application for rivet filed Apr. 12, 1912, Serial No. 691,764 and application for magazine for feeding rivets filed Aug. 5, 1912, Serial No. 713,262 although it is capable of being used in other con@ nections and for other purposes.

The invention may best be understoodv by reference to the 'accompanying drawing in which- Figure 1 is a vertical section of a machine constructed according to my invention, the lower portion of the casing on the line m x of Fig. 2 and the upperl portion being a central section, the working parts being principally in elevation. Fig. 2 is a section on the line .fc @c of Fig. 1. Fig. 3 is an inverted plan showing the bottom of the machine. Fig. 4 is a section on the line 'y 'y of Fig. 1. Fig. 5 is a plan of the upper end of the machine. Fig. 6 is a section on the line y y of Fig. 1. Fig. 7 is a section on line ai of Fig. 6. Fig. 8 is a detail plan taken on the line a 2- of Fig. 1. Fig. 9 is a vertical section on the line 00 of Fig. S. Fig. 10 is another similar section showing the parts in a different position from Fig. 9. Fig. 11 is a detail of the rivet delivering spout. Fig. 12 is a plan of the under side of a portion of the rivet carrier. Fig. 13 is a front elevation of the same. Fig. 14 is a top plan of the same. Fig. 15 is an enlarged detail section on the line x a: of Fig. 14. Fig.'16 is a front view of the rivet delivering spout-with the supporting rib for the rivet magazine. Fig. 17 is a side view of the same. Fig. 18 is a section on the line m m of Fig. 4. Fig. 19 is a front elevationof the base of the handle. Fig.

2O is a detail of the rocking catch. Fig. 21`

is a diagram showing the relative positions of the two loose cams, Fig. 22 is a side elevation of the head of the casing with portions broken away, andFig. 23 is a partial l section taken on the same line as Fig. 1 showing the punchin its lower position.

The working parts of the machine are contained in and supported by a casing 1 having a horizontally enlarged base 2.

The sheets of paper or other material to' into operative position.

As here shown, I provide a bed piece 3 which is pivoted at 4 to the back portion of the base of the machine so that it has a limited lateral throw. Thelimits of this throw are determined and regulated by adjusting screws 5 against which the 'bed piece strikes on each side. The reciprocating bed piece carries a .punch and die mechanism and a rivet upsetting mechanism located side by side so that eachy may operate alternately Vto punch the hole and drive and upset the rivet. As here shown, the front end of the bed piece is provided with a female die 6 and an anvil 7 (Fig. 4) spaced apart the exact distance of the lateral throw of the bed piece. A' punch to engage the female die and an upsetting head to engage the anvil are secured to a pair of arms 10 and 11 Vpivoted by their rear endsto the bed piece and held normally raised by springs 14 (Fig. 1).

Means are provided for swinging the bed piece 3 from side to side and preferably I employ spring connections by which breakage is avoided if any obstruction gets in the way. As here shown, I effect the oscillation of the bed piece by means of two push bars 12 and 13, the rear ends of which engage a yoke 14, here shown (Fig. 3) as loosely pivoted on the pivot 4. The yoke 14 is connected at each end to a cross bar 15 secured to the under side of the bed piece 3, by spiral springs 16. The oscillation of the yoke 14 acting through springs 16a on the cross bar 15 will thus throw the bed piece back and forth, the impulse being conveyed through the spring connecting bar. The push bars are operated to pushV back rst one end and then the other of the yoke 14 by an operating handle pivoted to the upper end or head of the machine and so connected with the bars that each will be alternately forced backward to swing over the bed piece and released to allow the opposite bar to act. As here shown, the operating handle 16 is pivoted on a pin 17 which extends through the upper end or head of the casing. The casing extends upward at each side of the handle 16 forming a pair of side walls 18a, 18h closely adjacent to the base of the handle.

The bars 12 and 13 each of which is closely adjacent to the inside of the casing are alternately forced backward and downward by a pair of cams 19 and 20 loosely pivoted on the pin 17 next to the base of the handle. Each of the cams 19 and 20 (Figs. 18, 21) has a roll engaging recess 21, 21 which is adapted to engage a cam roll 22 one on each of the bars 12 and 13 and adjacent to each recess 21, 21 there is an eccentric surface 23, 23 up which the roll moves to enter the recess. The movement of the roll along the surface 23, 23 pushes it away from the pivoted center of the cam and consequently forces the bar backward and downward. The inclined downward motion of the bar is converted into a substantially horizontal motion by a pin 24 passing through a slot 25 in the lower end 0f the bar. (Fig. 1). The cams 19 and 2O are alternately turned so as to bring each of the rolls 22 alternately into the recesses 21, 21 by the reciprocating motion of the handle 16 which is swung into a forward and a rear position as shown by the full and dotted lines in Fig. 1. The forward movement of the handle is utilized to actuate the push bars and to oscillate the bed piece while the backward motion is utilized to operate the punch and die and the upsetting mechanism and to release the push bar which has thrown over the bed piece.

Means are employed to reciprocate each of the cams 19 and 2O iirst to bring one of the rolls into the recess 21 and 21 over the surface 23 or 23 and then to return it to its original position, the cams having a limited motion first in one direction and then in the other. As here shown, this reciprocation of each cam is effected by a rocking catch 27 which has engaging ends 272L and 27 b. The catch 27 is pivoted to the base of the handle friction tight, its ends 27 a and 271 projecting out at each side opposite the edges of the cams. It is in position where it may be tilted first in one direction and then in the other toengage or pass over certain projections of the cams. The two arms of the catch make an angle with each other so that when one is raised the other is lowered against the cam. (Fig. 20).

Each cam is revolved to bring the recess 2l, 21 into engagement with one of the rolls 22 by a shoulder 26, 26 which is located in the path of one end of the catch 27 when that end is in its lower or engaging position. Another shoulder 28 is located on the upper surface of the cam 19 some distance from the shoulder 26 and the connecting portion ascends from the shoulder 26 to the shoulder 28 so that when the shoulder 28 has reached the end 272L of the catch 27 the opposite end 27b of the catch is tilted down to its lower or engaging position.. A shoulder 28 is formed on the cam 20 to correspond to the shoulder 28 on the cam 19. The shoulders 28 and 28 are utilized to trip and release the cam roll on the backward movement of the handle. Thus in Fig. 18 the handle has just completed its forward movement and the end 27 of the catch 27 has engaged the shoulder 26 on the cam 19, causing the roll 22 to pass up over the surface 23 and into the recess 21. The bar 13 has thus been forced down and the bed piece has been swung from one side to the other. The other bar 12 had previously been freed from its roll as shown in dotted lines Fig. 18 and loosely occupies the recess adjacent to the inclined surface 23. Vhen the handle is thrown back the end 27a of the catch 27 engages the shoulder 28 and it is carried back until the camyhas turned so as to relieve the roll 22 from the recess 21. It will be understood that the spiral springs 16 are so located that they exert a tension when the roll enters the recess 21 but when the roll is released from the recess the spring and the bar are slack. It will thus be seen that the end 27 a of the catch on the forward movement of the handle engages the shoulder 26 vforcing the bar 13 down and swinging the bed piece and on the backward motion of the handle it releases the roll leaving the bed piece free to be swung the other way, at the Sametime raising the end 27a contacting with cam 19 and lowering the end 27" contacting with cam 20 into engaging position. On the next motion of the handle forward the shoulder 26 on the cam 20 is hit by the end 27b of the catch 27 which has been tilted down as stated and the roll on bar 12 is now brought to its recess 21 in the cam 20, throwing the bed piece in the direction opposite to that before described. On the backward motion of the handle the incassi?` shoulder 28 is hit by the end 271 the roll released and the catch again tilted on the surface adjacent to the shoulder 28 so that the end 27a is down onto the cam 19. Thus, as the handle is thrown forward and backward the bars 12 and 13 are alternately forced backward and released causing a regular oscillation of the bed piece, the catch 27 being tilted back and forth by the opposing surface of the two cams, as eX- plained.

The catch 27 performs another function aside from reciprocating the cams 19 and 20 and that is to clamp and release the paper on the work table. The clamp hereinafter to be described is raised or released by means of a lifting rod 29 pivoted to one end of a lever 30 which is centrally pivoted adjacent to the base of the handle. Some portion of the lever' 30 extends into the path of the end 9.71 of the catch 27. As here shown (Fig. 18) the lever 30 has an oset 31 which eX- tends into the path of the end 271 of the catch and in position to be struck by it when the handle is swung forward to shift the bed piece. The end 271 is in position to strike the projection 31 when the end 271 is in engagement with the cam 19 and the end 271 is away from the cam 20 and held in such posivtion by friction. Thus the lifting rod 29 being only lifted when the end 271 is up or out and the end 27 is down, the clamp is opened only every other time the handle 1G is brought forward and since it takes 'two complete reciprocations of the handle to secure one rivet, the clamp is opened at the beginning and end of each complete operation.

If the handle through carelessness or inattention should be reversed before any movement is complete, that is, before the handle has been thrown entirely over in either direction, the machine would not work and the parts would be liable to `be broken. Means are provided to guard against this contingency. To insure the completion of each operation before the next operation begins, I provide means to prevent the handle from being reversed before it is thrown completely over in either direction. This is accomplished by a pawl which is adapted to engage a tooth on the inner face of each of the walls 13a and 181 if the handle is reversed before the end of its stro-ke. The tooth is preferably located near the end of the stroke and means are provided to put the pawl out of engaging position when the stroke is complete. As here shown, I form preferably in the casting of each of the walls 1Sa and 131, two teeth 331 and 341 and 33 and 34l which extend inwardly and are adapted to engage a pawl on the handle. These teeth are engaged by a pawl bolt which is mounted in the handle in a transverse hole in which it is adapted to slide. The

. ends of the pawl-bolt 35 engage the teeth 33a, 341, 331 and 341 on either side of the handle. The ends] of the pawlbolt are formed to catch against the square shoulders on the teeth 33a and 331 to prevent the reversal of the handle while they slide in the opposite direction over the inclined surface of the teeth so that the regular motion of the handle is not obstructed.

Means are provided to throw the pawlbolt from operative position on one side to operative position on the opposite side on the completion of each stroke of the handle and to give it a spring tension in each direction. As here shown, I form in the center of the pawl-bolt 35 a pointed projection having a relatively sharp edge which engages the end of a pointed tension-bolt whereby the bolt after being forced in beyond the center is thrown over onto the other side. In practice I form on each side of the center of the pawl-bolt 35 an angular notch leaving a pointed tooth 36 between them. The tension-bolt 37 is seated in a recess transverse to the hole containing the bolt 35 and has a pointed end which fits into the notches in the pawl-bolt. A spiral spring 38 forces the bolt 37 against the pawl-bolt 35. As a consequence of this construction while the end of the bolt 36 is seated in either one of the two notches it holds one end of the pawl-bolt 35 well out against the inner face of one of the walls 13a and 131 and in position to engage the teeth formed on those walls. The tension of the spring is exerted to give the pawl-bolt a regular pawl action so long as it is not pressed in far enough to pass beyond the center.

The teeth 33a and 331 project inward only far enough to catch the end of the pawl-bolt but not far enough to push it beyond the center. The pawl-bolt thus rides over the tooth 3311 going in one direction and catches against it to prevent it from going in the opposite direction and the same in the opposite direction with the corresponding tooth 331 on the other side. The pawl-bolt is thrown over from one side to the other side by its end coming in contact with the tooth 34a at one end of its stroke and the tooth 341 at the other end, each of these teeth eX- tending inwardly far eno-ugh to throw the bolt beyondthe center and being located at the end of the stroke. The safety action of this portion of my device will now be clear. As the handle is thrown in either direction the pawl-bolt 35 will ride over the tooth 33FL or 331D as the case may be and after passing this point it cannot be reversed without catching on the tooth. TvVhen the end of the throw is reached, the action of the tooth 3411 or thetooth 341 throws the bolt over to the other side where it acts as an automatic check on the return stroke. The tension bolt may be inserted through a hole bored as shown in dotted lines Fig. 7.

Means are provided whereby the throw of the pivoted handle alternately depresses the punch and the upsetting head. This is preferably effected on the rearward motion of the handle, the forward motion being utilized to reciprocate the bed piece. As here shown, I make use of a plunger 39 pivoted to an arm t() on the handle 1G (Fig. 1) to force downward the arms 10 and l1 first one and then the other. The plunger has in its lower end a notch or recess which embraces an upwardly extending projection 1la on the arm 11 and 11b on the arm 10 so that a connection is sure to be made as the plunger is moved downwardly. As here shown, the plunger is located directly over the center of the machine in the point where the paper is to be perforated and the punch and upsetting member are each brought in turn directly under.it. I'Vhen the handle is swung backward the plunger descends and operates the punching or upsetting mechanism whichever happens to be beneath it. Means are provided to prevent the descent of the punch or the upsetting mechanism when they are not in proper position laterally. As here shown, I form on the end of each of the arms 10 and 11. horizontal fingers Lila, Lil" respectively, and in the normal line of vertical motion of this inger, I interpose a recessed obstruction. Preferably this obstruction is in the form of an abutment 42 formed in the casting of the casing and extending out beneath the fingers 41a and 41h. The abutment has a vertical slot just wide enough to allow the passage of the fingers 41, all when they are in their proper or normal position and are descending to punch thc hole or upset the rivet. If the arms are not thrown over to the exact position the abutment prevents their descent.

Means are provided for conveying the rivets to the upsetting mechanism preferably being taken from the magazine shown and described in my said application and automatically fed in. As here shown, I make use of a sliding reciprocating carrier which is in the form of an elongated. plate or flat bar slidably held by guides 41 (Figs. 1 2-14). The carrier has a rivet receiving and holding opening or trap into which the rivets drop and in which they are held while being carried to the driving and upsetting head. The opening has a round portion 45 a trifle larger than the head of the rivet and an extension 45h of the same general form but somewhat larger than the shank of the rivet. The round portion 45a is internally grooved at the edge (Fig. l5) for the purpose of preventing the rivet from being jarred out of position. The carrier slides beneath the lower end of a rivet delivering spout 4G from which the rivets drop so as to rest sidewise on the carrier as shown in Fig. 9. The vertical spout 46 has a lateral ange on each side leaving an opening through which projects the shank of the rivet and providing a confining space for the head.

The lower end of the spout adjacent to the carrier is curved slightly inward so that as the rivet rests on the plain portion of the carrier its head is steadied and guided so as to drop downward and inward. As the opening 45 comes beneath the lower end of the spout the rivet drops in, the shank first dropping through the slotted extension 451 and bringing the rivet vertical and the head then entering the round portion 45a (Fig. l0). The rivet is supported when in the carrier by a pair of fine spiral springs 47 on the under side of the carrier. These springs 47 are parallel and are substantially the distance apart of the width of the shank of the rivet so that the rivet as it drops down will be embraced by the springs, the head of the rivet resting on the springs. The ends of the springs 47 are attached to brackets on the under side of the carrier. In this position the rivet is moved by the carrier to a position directly beneath the upsetting head 9 by which it is forced through the hole which has previously been cut in the paper and onto the anvil where it is iiattened and upset.

The action of the groove in the recess 45 is as follows: As the head of the rivetrests on the springs with the shank hanging down between them and the carrier is shot into place before the rivet is inserted, there would naturally be a tendency for the head to be tilted up by the momentum. of the shank as the carrier comes to a stop. This tendency is checked by the action of the groove. Upon the stopping of the carrier the head slides against the end of the recess with its edge in the groove. It then drops back upon the supporting springs in line with the punched hole. Thus the action of the groove holds the head of the rivet from being jarred out of place upon the inward motion of the carrier and prevents its getting out of position when the upsetting head descends.

The carrier has beside the rivet carrying opening an opening 48 to allow the passage of the punchas the latter operates while the carrier is in its loading position. The guides which support the carrier are held in any suitable manner between thepunch and its die and the upsetting head and the anvil. As here shown, I secured it to the under surface of a clamping plate for clamping the work, this clamp being preferably formed of sheet steel and in such manner as to provide a work table 51. The table 51 is secured to the side of the base by a projection 51"L which extends rearwardly on each side and is held by screws to the base. The projection 51a is narrow enough so that the spring of the material allows` the table to move freely up and down within the limits of its motion. (Fig. 2).

The clamp 49 is bent or folded back substantially parallel with the work table 51 and it has formed on its forward or outer end a. clamping flange 50. The clamping plate 49 is so formed with an initial set in respect to the table 51 that it is normallyr closed upon the table. The clamp is opened against the tension of the spring plate of which it is made by the lifting rod 29 already described, this rod extending down inside of the casing and connecting with an arm 52 extending out from the clamp. Then the rod 24 is released the clamp automatically closes. It is desirable to lift the work from the die and anvil when they are sliding back and forth, otherwise there would be liability of tearing any thin paper which came in contact with them. For this purpose I give the table a vertical motion timed to lift the work ofl' from the anvil and. die when the bed piece is shifting. As here shown, the table is held normally above the die and anvil by means of a fiat spring 53 on the under side of the table and the table is prevented from rising too high by a pin 54 passing through the spring and having a head on its upper end. The table is depressed by a downwardly extending projection 54 on the arms 10 and 11. This projection strikes the top of the clamp 49 and depresses it and the table. Each time the punch or the upsetting head comes down the clamp and the table are forced downwardly so that the paper being riveted lies flat on the die and anvil.

The rivet delivering guide 46 is secured to the clamp 49 and rises and falls with it. The guide 46 is preferably connected with the outlet of my rivet storing magazine above referred to but not here shown. The upright rib 55 connected with the top of the guide (Figs. 16 and 17) receives and holds the magazine. j

Mechanism is provided for dropping the rivets at the proper time from the guide onto the carrier. As here shown, (Fig. 11) a vertically disposed lever 56 is pivoted near the lowei` end of the guide with an offset 58 which extends into the guide and forms a stop for the lowermost rivet. The lower end of the lever extends downwardly and enters a groove 58v in the carrier'. The groove 58 is so shaped that as the carrier slides in, the lower end of the lever is swung out to allow a rivet to drop when the plain end of the carrier is beneath the spout. As thc carrier moves back to its outer position the lower end o f the lever 57 is carried inwardly toward the spout and the offset 58 is inserted between the lowermost rivet and those in the spout. Thus a rivet is dropped of the die.

'on the carrier each time the carrier delivers a rivet to the upsetting mechanism.

Mea-ns are provided to reciprocate the carrier for the purpose of feeding in the rivets. As here shown, 1 make use of a lever 59 pivoted to the table 51, (Figs. 1 and 8) and having its outer end engaging a recess 60 (Fig. 14) in the edge of the carrier 43. The inner end engages loosely a-recess formed in a projection (31 on the bed piece 3 '(Figs. 1 and 8). As the bed piece oscillates from side to side the lever 59 is oscillated, moving the carrier in the opposite direction from the bed piece. 1n Fig. 9 1 have shown the work in place at 62 clamped to the table by the clamping flange 50.

The operation of my riveting machine is readily understood from what has been said of its construction and the operation of the several parts. Assuming that the position of the parts are in the positions as shown in Fig. 1, the clamp 49 will be raised since the end 271 of the rocking catch 27 will beY thrown' out, and will have struck the lever 30, drawing up the lifting rod 29 and opening the clamp. The handle will be in its forward position. A rivet will be in position in the carrier as shown in Fig. 10. The bed piece will have beenothrown over by the action of the push bars 12 and 13 so that the punch is directly under the plunger^39 as shown in Fig. 4. The handle is now thrown back bringing down the plunger which in turn depresses the punch and punches a hole in the paper. At the same time the projection 54 comes down on the top of the clamp and presses the work table and the paper to be cut down to the level handle cannot be reversed until the stroke is complete. vThe instant the handle starts back the catch 27 releases the lever 30 and the clamp automatically closes by its own resiliency. The handle is now brought forward and the bed piece is Vthrown over by the action of the cams 19 and 20 and the push bars 12 and 13 as explained. The punch and die are moved to the left (Fig. 4) and the upsetting head brought under the plunger 39 and directly over the hole in the paper. As the bed piece swings over the lever 59 slides the carrier inwardly bringing in the rivet to a position directly above the hole and directly under the upsetting head 9.

The parts are so constructed that the bed does not begin to swing until the punch 8 has cleared the hole in the clamp 49 through which it has passed to reach the paper.y

The handle is now thrown back a second time, the head 9 descends, carrying the rivet downwardly into and through the hole already formed by the punch and crushing it on the anvil. The rivets used are preferably the hollowsolid headed rivets described As already pointed out, thev in my said application and capable of being upset between two flat surfaces. The rivet has now been inserted and upset. The handle is finally brought forward, the bed is shifted back to its original position by one of the bars l2, 13, the end 27" of the catch 27 strikes the projection 3l on. the lever 30 and lifts the clamp, releasing the paper.

It will be noticed that on the first forward movement of the handle the end 271 of the catch 27 was tilted down against the cam 2O and consequently did not hit the lever 30. The clamp 49 thus remained closed until the riveting operation was complete when the work was released.

lVhile I have described the operation of riveting sheets of paper together the machine may be used for riveting any thin materials where a hollow crushing rivet may be used. llfhen used in oflices and other places where paper is to be fastened the rivets will be supplied in maga-zines such as are described in my said application.

The machine is rapidly used by hand and it may also be connected up to be used with power.

It is to be understood that many changes and modifications may be made without departing from the limits of the invention as set forth in the claims.

I claim 1. In a riveting machine, the combination of a pivoted bed piece having thereon a die and an anvil, a pair of arms pivoted to said bed piece, one carrying a punch for said die and the other an upsetting head for said anvil, an actuating device for depressing said punch and head separately, means for reciprocating said bed piece and means for feeding a rivet to said anvil.

2. In a riveting machine, the combination of a pivoted bed piece having thereon one of the members of a punch and die mechanism and one of the members of a rivet upsetting mechanism, a pair of arms pivoted to said bed piece and having thereon the other members of the punch and die mechanism and rivet upsetting mechanism, means making a yielding connection with said bed piece for reciprocating the same, an actuating device for alternately operating the punch and die and the rivet upsetting mechanism and means for feeding a rivet to said upsetting mechanism.

3. In a riveting machine, the combination of a pivoted bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, actuating means for operating each mechanism separately, a pivoted operating handle and a pair of push-bars connecting said operating handle with said bed piece for swinging the same in opposite directions.

4. In a riveting machine, the combination of a pivoted bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, actuating means for operating each mechanism separately, a pivoted operating handle, a pair of push-bars operated by said handle and springs connecting said push bars with the bed piece for oscillating the same.

5. In a riveting machine, the combination of a pivoted bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, actuating means for operating each mechanism separately, a pivoted operating handle, a pair of push bars alternately actuated by the movement of said handle, a yoke centrally pivoted adjacent to the pivoting point of said bed piece to which yoke the ends of said push-bars are connected and springs connecting said yoke with said bed piece.

6. In a riveting machine, the combination of a pivoted bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a pair of push-bars each connecting by one end to the bed piece for oscillating the same, a. pair of cams pivoted concentrically with said handle and one on each side of the same, a cam roll on each push-bar each cam roll engaging one of said cams and a rocking catch pivoted on said handle for alternately actuating said cams.

7. In a riveting machine, the combination of a pivoted bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a shaft for the same, a pair of push-bars, one on each side of said handle and embracing said shaft and connected by their lower ends with said bed piece and arranged to oscillate the same, a pair of cams pivoted concentrically with said handle one on each side of the same, a cam roll on each push bar each cam roll engaging one of said cams and a rocking catch pivoted on said handle for alternately actuating said cams.

8. In a riveting machine, the combination of a pivoted bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a shaft for the same, a pair of push bars, one on each side of said handle and embracing said. shaft and connected by their lower ends with said bed piece and arranged to oscillate the same, a pair of cams loosely pivoted on said shaft, one on each side of said handle, a cam roll on each of said push bars each engaging one of said cams, and a centrally pivoted rocking catch the two arms of which make an angle to each other, said cam having surfaces which rock said catch and bring it into actuating engagement first with one cam and then with the other.

9. In a riveting machine, the combination of a pivoted bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, means actuated by motion of the handle in one direction for oscillating said bed piece and means actuated by the motion of the handle in the opposite direction for separately operating the punch and die and the upsetting mechanism.

10. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a pair of push-bars connecting with said bed piece and arranged to oscillate the same and actuated alternately by movement oi the handle in one direction and means actuated by the motion of the handle in the opposite direction for operating the punch and die mechanism and the upsetting mechanism.

11. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a pair of push bars connecting with said bed piece and arranged to oscillate the same and actuated alternately by a movement of the handle in one direction and a plunger for alternately operating the punch and die mechanism and the upsetting mechanism actuated by the movement of the handle in the opposite direction.

12. In a riveting machine, the combinaq tion of a piovted oscillating bed piece carrying a female die and an anvil arranged side by side, a pair of arms pivoted to said bed piece one carrying a punch for said die and the other a rivet upsetting head for said anvil, a pivoted operating handle, a pair of push-bars connecting by one end With said bed piece and arranged to oscillate the same, the other ends of said bars being connected to said operating handle to be alternately actuated by its movement in one direction and a plunger operated by a movement of the handle in the opposite direction and positioned above said arms so that each in turn comes beneath it.

13. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, means arranged to be operated by the handle when moved in one direction for oscillating the bed piece and a paivl for preventing the reverse motion of the handle before its full stroke is completed.

14. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, means arranged to be operated by the handle in one direction for oscillating the bed piece, means arranged to be operated by the motion of the handle in the opposite directions for actuating the punch and die and the upsetting mechanism and paivls for preventing the reverse motion of the handle before it has completed its motion in either direction.

15. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a casing adjacent to said handle, means operated by the handle for oscillating said bed piece, a stop on said casing and a paWl on said handle adapted to engage said stop to prevent the return of the handle before its movement is complete. i

1G. In a. riveting machine, the combination oi' an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a casing adjacent to said handle, means operated by' the handle Jfor oscillating said bed piece, a stop on said casing, a paivl on said handle adapted to engage said stop to prevent the return of the handle before its movement is complete and means for thro iving said paivl out of engaging position when said movement is complete.

- 17. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and-a rivet upsetting mechanism, a pivoted operating handle, a. casing adjacent to said handle, means operated by the handle for oscillating said bed piece, a stop on said casing, a paivl on said handle adapted to engage said stop to prevent the return of the handle betere its movement is complete and means for throwing said pawl out of engaging position When said movement is complete, and for throwing it into engaging position during the opposite movement.

18. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a casing adjacent to said handlev and extending on both sides thereof, means operated by the handle for oscillating said bed piece, a stop on the casing, a spring actuated paWl-bolt mounted in said handle and adapted to engage said stop, means on the casing on the same side as said stop for throwing said paivl-bolt out of engaging position at the end of one movement of the handle and means on the opposite casing for throwing it back into engaging position on the same side as said stop on the return movement of the handle.

19. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, apivoted operating handle, a casing adjacent to said handle and extending on both sides thereof, means operated by the handle for oscillating said bed piece, a stop on the casing, a paWl-bolt mounted in said handle and adapted to enicc ilo

iso

said stop, and a spring arranged to press said paivl in either direction after passing a central position, an inclined surface being` formed on the same side of the casing with said stop for forcing the paWlbolt out of its engaging position and beyond its central position, an inclined surface being formed on the other side of the casing in line With the end of said pavvl-bolt for returning the same to engaging position upon the reverse movement of the handle.

20. In a. riveting machine, the combination of a mechanism for punching the paper, mechanism for feeding a rivet to the punched hole, mechanism for driving and upsetting the rivet, a. normally closed paper clamp, a lifting bar for opening the same, a pivoted operating handle having tivo operative strokes one in each direction, means carried by said handle for lifting said lifting bar and mechanism for connecting said means to said lifting bar at the close of each riveting operation only.

i1. In a riveting machine, the combination of a mechanism for punching the paper, mechanism for feeding a rivet to the punched hole, mechanism for driving and upsetting the rivet, a normally closed paper clamp, a lifting bar for opening the same, a pivoted operating handle having tivo operative motions, one in each direction, a rocking catch pivoted to said handle for lifting said bar and means for disengaging said catch and lifting bar at the end of the rivetn ing operation only.

2 2. In a riveting machine, the combination of a mechanism for punching the paper, mechanism for feeding a rivet to the punched hole, mechanism for driving and upsetting the rivet, a normally closed paper clamp, a lifting bar for ope-ning the same, a pivoted lever connected With the upper end of saidilifting bar, a pivoted operating handle having tivo operative motions, one in each direction, a rocking catch pivoted to said handle and having an arm adapted to engage said lever to lift said bar, a cam movably by said operating handle positioned to act on end of said catch and means to hold it out of contact with said lever except at the finish of the riveting operation.

25. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a. rivet upsetting mechanism, a. pivoted operating handle, means actuated by the motion of the handle in one direction to oscillate the bed piece and means operated by the other motion of the handle for alternately operating the punch and die and the upsetting mechanism, a normally closed paper clamp, a lifting rod for opening said clamp, a lever pivoted to the upper end of said lifting rod, a rocking catch pivoted to said handle having one end adapted to engage said lever to lift the clamp, and means for holding the catch out of engagement with said lever until. after the operation of said riveting is com plete.

24. In a riveting machine, the combina.- tion of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted operating handle, a pair of push bars for oscillating said bed piece, a pair of cams loosely pivoted concentric with the pivot of said handle, a bearing member on each bar positioned to be engaged by one of said cams, a rocking latch pivoted to said handle and having one end positioned to engage said lever to raise said lifting bar, and means to act on said catch to hold it out of engagement with said lever until after the operation of riveting is complete.

25. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a pivoted oscillating operating handle, a pair of push-bars for oscillating said bed piece, a pair of cams loosely pivoted concentric With the pivot of said handle, a bearing member on each of said bars positioned to be acted upon by one of said cams, a paper clamp normally closed, a lifting rod for opening said clamp, a lever to which said lifting rod is pivoted, and a rocking catch pivoted to Said handle, one end of said catch being positioned to engage said lever to open the clamp, each of said cams having an eccentric portion terminated by a recess for alternately engaging and longitudinally moving one of said push bars and a shoulder positioned tol be struck by one end of said catch for forcing said recess into engagement with said bearing member and an inclined surface adjacent to said shoulder upon which one end of said catch rides to depress the opposite end out of position to engage said lever.

26. In a riveting machine, the combinan tion of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism side ley-side, an oscillating handle for oscillating said bed piece and i operating said punch and die and said upsetting mechanism and a reciprocating rivet carrier for carrying the rivet to the upset ting mechanism.

27. In a riveting machine, the combina.- tion of an oscillating bed piece carrying a punch and die mechanism and a. rivet upsetting mechanism side by side, an oscillat ing handle for oscillating said bed piece and operating said punch and die and said upsetting mechanism and a reciprocating rivet 125 carrying plate having an opening to permit the passage of the punch and a rivet holding recess for receiving and delivering the rivet to the upsetting mechanism.

28. In a riveting machine, the combina- 13o tion of an oscillating bed piece carrying a punch and die mechanism and a. rivet upsetting mechanism side by side, an oscillating handle for oscillating said bed piece and operating said punch and die and said upsetting mechanism and a rivet carrier reciprocated by the motion of said bed piece for carrying the rivet to the, upsetting mechanism.

29. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism side by side, an oscillating handle for oscillating said bed piece and operating said punch and die and said upsetting mechanism, and a rivet carrying plate having an opening for the passage of the punch and a rivet holding recess for receiving and holding a rivet, and means actuated by the bed piece for bringing the rivet holding recess in line with the upsetting mechanism.

30. In a riveting machine, the combination of a work table, a normally closed spring clamp formed of resilient material for clamping the work to the table, mechanism for opening the clamp to allow the insertion of the work, mechanism for punching the work, mechanism for inserting and upsetting a rivet and means for automatically opening the clamp as soon as the riveting is complete.

3l. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a reciprocating rivet carrying plate interposed between the parts of the punch and die mechanism and the upsetting mechanism, said plate having an opening for the passage of the punch and a rivet receiving opening, transverse guides for carrying said plate, a vertical rivet delivering spout connected with said transverse guide, means for dropping one rivet at a time into said rivet receiving opening, a vertically movable work clamp carrying the said transverse guides and means actuated b y the oscillations of the bed piece for reciprocating the said plate to transfer the rivet to the upsetting mechanism.

32. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a reciprocating rivet carrier having a rivet receiving and holding opening and means for bringing said opening into line with the upsetting mechamsm.

33. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a rivet upsetting mechanism, a reciprocating rivet carrier for delivering rivets to the upsetting mechanism, guides for the same, and a pivoted lever one end of which is connected with said carrier and one end being connected with said bed piece whereby said carrier is reciprocated in the opposite direction to said bed piece.

34. In a riveting machine, the combination of an oscillating bed piece carrying a punch and die mechanism and a riveting mechanism, a reciprocating rivet carrier for delivering rivets to the upsetting mechanism, transverse guides for said carrier, a vertical rivet delivering spout carried by said transverse guides, releasing mechanism for dropping the rivets to said carrier one at a time, and a pivoted lever one end of which is connected with said carrier and one end with said bed piece whereby the carrier is reciprocated in the opposite direction to said bed piece.

35. In a riveting machine the combination of an oscillating bed piece carrying a female die and an anvil arranged side by side, a punch and a rivet upsetting head coacting with said die head, a vertically movable spring supported work table raised normally above said die and anvil and :means for depressing said work table to the level of the die and anvil when said punch and head descend. Y 36. In a riveting machine, the combination of an oscillating bed piece carrying a female die and an anvil arranged side by side, a pair of arms pivoted to said bed, one carrying a head to engage said anvil, a vertically movable spring supported work table normally above said die and anvil and an abutment on each of said arms constructed and arranged to depress said table to the level of the die and anvil.

37. In a riveting machine, the combination of an oscillating bed piece carrying a female die and an anvil arranged side by side, a punch and upsetting head co-acting with the die and anvil, a work table composed of resilient sheet metal having its inner end turned back to form a clamp adapted to press the work against said table, a spring for holding the table normally above the die and means for forcing the clamp and table downward when said punch and head descend. y

38. In a riveting machine, the combination of an oscillating bed piece carrying a female die and an anvil arranged side by side, a pair of arms pivoted to said bed piece, one carrying a punch and an upsetting head for engaging the die and the anvil, a work table composed of resilient sheet metal having its inner end turned back to form a clamp adapted to press the work against the table, a spring for holding the table normally above the die and an abutment on each of said .arms for impinging on said clamp to force it against the table and the table downward to the level of the die.

39. In a riveting machine, the combination of an oscillating bed piece carrying a female die and an anvil arranged side by side, a punch and upsetting head co-acting with the die and anvil, a work table composed of resilient sheet metal having its inner end turned back to form a clamp adapted to press the work against said table, a spring for holding the table normally above the die, means for forcing the clamp and table downward when said punch. and head descend and a reciprocating rivet feeding Carrier carried by said clamp.

40. In a` riveting machine, the combination of an oscillating bed piece carrying a female die and an anvil arranged side by side, a pair of arms pivoted to said bed piece carrying a punchand upsetting head to engage said die and anvil, a work table composed of a plate of resilient metal turnedv back at its inner end to form a clamp adapted to press the work against the table, a spring for holding saidtable normally above the die, an abutment on each of Said arms for depressing the clamp and the table, a lifting bar for raising said clamp, a stop for limiting the upward motion of the table, a pivoted operating handle and means actuated by the motion of the handle for raising said lifting bar.

il. In a riveting machine, the combination of an oscillating` bed` piece carryingfa female die and an anvil, a pair of arms pivoted to said bed piece and carrying a punch and an upsetting head for engaging the die and anvil, means. for depressing said arms alternately, and a stop on each side Of the vertical path of said arms for obstructing their descent when out of their correct lateral position.

42.' In a riveting machine, the combination of. an oscillating bed piece carrying a female die and an anvil, a pair of arms pivoted to said bed piece and carrying a punch and an upsetting head for engaging the die and anvil, each of said arms having a horizontal projection at its end, a casing for the machine, and an abutment on the inside of said casing in the vertical path of said projections, said abutment having a slot or opening which will just allow the projections to pass through when the arms are in their;'correctA lateral position.

43. Iny a riveting machine, the combination of a rivet upsetting head, a rivet carrier for feeding rivets to the head with a rivet receiving and holding opening including an enlarged portion slightly larger than the rivet head andgrooved on its inner edge anda connecting contracted portion slightly larger than the shank and a pair of spiral supporting springs beneath the enlarged portion for sustainingfthe head while all0wing it'to be forced downward between them by the said head.

Intestimony whereof I have affixed my signature, in presence of two witnesses.

ELMER M. COBB.

lVitnesses S. W'. Barns, C. B. CREIGHTON.

Copies e! this patent. may be obtained vvrc1-fafa cents each, lby addrcssngthe Commissioner or Patents.

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